Use our free Calorie Deficit Calculator to find out how many calories you should eat daily to lose weight safely and effectively.
What Is a Calorie Deficit?
A calorie deficit occurs when you consume fewer calories than your body burns in a day. This forces your body to use stored fat for energy, leading to weight loss.
Your maintenance calories represent the number of calories required to maintain your current weight. When you reduce that intake by 10–25%, you create a controlled calorie deficit.
How Much Deficit Is Safe?
• 10% Deficit: Slow and sustainable fat loss
• 15% Deficit: Balanced and effective
• 20% Deficit: Faster results but requires discipline
• 25% Deficit: Aggressive – not recommended long-term
Why You Should Avoid Extreme Deficits
Very low-calorie diets can cause:
• Muscle loss
• Slower metabolism
• Fatigue
• Hormonal imbalance
Sustainable fat loss comes from moderate deficit + high protein intake + strength training.
How To Use This Calculator
1. First calculate your maintenance calories (using TDEE calculator).
2. Enter that number into this tool.
3. Choose your preferred deficit percentage.
4. Follow the recommended calorie intake daily.
Tips For Better Results
• Keep protein intake high
• Lift weights 3–4 times per week
• Sleep at least 7–8 hours
• Track progress weekly, not daily
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Final Words About This Tool
This Calorie Deficit Calculator helps you determine the exact number of calories you should consume daily to lose weight safely. Instead of guessing or following extreme diets, use a calculated deficit approach to ensure sustainable fat loss while protecting muscle mass.
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